Hibiscus plant named ‘Plant No. 179’

ABSTRACT

A new and distinct cultivar of Hibiscus plant named ‘Plant No. 179’, characterized by its plant height of about 3.5 to 5.5 feet; very large flat flowers with fully overlapping petals; vibrant pink flower color; flowers that maintain their flat shape for up to two days; long flowering period; resistance to diseases and insects common to Hibiscus; tolerance to humidity exremes; tolerance to drought and flooding; and tolerance to temperatures extremes.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar ofwinter-hardy Hibiscus, or Rose Mallow, botanically known as Hibiscusmoscheutos, and hereinafter referred to by the cultivar name ‘Plant No.179’.

The new cultivar is a product of a planned breeding program conducted bythe Inventor in Park Ridge, Ill. The objective of the breeding programis to create new Hibiscus cultivars having large flat flowers withoverlapping petals, long-lasting flowers, long flowering period andattractive flower colors.

The new cultivar originated from a cross made by the Inventor in ParkRidge, Ill., of the nonpatented Hibiscus moscheutos cultivar ‘RedPlate’, as the female, or seed, parent with the nonpatented Hibiscusmoscheutos cultivar ‘Bills's Giant White’ as the male, or pollen,parent.

The cultivar ‘Plant No. 179’ was discovered and selected by the Inventoras a flowering plant within the progeny of the stated cross in acontrolled environment in Park Ridge, Ill. in 1993.

Compared to plants of the male parent, the cultivar ‘Bill's GiantWhite’, and the female parent, the cultivar ‘Red Plate’, plants of thenew Hibiscus have larger flowers, flatter flowers, a longer floweringperiod, maintain the flat flower shape longer and differ in flowercolor.

Asexual reproduction of the new cultivar by root crown divisions and byterminal and stem cuttings taken in a controlled environment in ParkRidge, Ill., has shown that the unqiue features of this new Hibiscus arestable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

The cultivar ‘Plant No. 179’ has not been observed under all possibleenvironmental conditions. The phenotype may vary somewhat withvariations in environment such as temperature, light intensity,nutrition and water status without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined tobe the unique characteristics of ‘Plant No. 179’. These characteristicsin combination distinguish ‘Plant No. 179’ as a new and distinctcultivar:

1. Plant height of about 3.5 to 5.5 feet.

2. Very large flat flowers with fully overlapping petals and vibrantpink in color.

3. Flowers that maintain their flat shape for up to two days.

4. Long flowering period.

5. Resistant to diseases and insects common to Hibiscus.

6. Tolerant to humidity extremes.

7. Tolerant to drought and flooding.

8. Tolerant to temperature extremes, plants will tolerate temperatureranges from −25° to 100° F.

9. Roots are not attractive to rodents.

Plants of the new Hibiscus can be compared to plants of the Hibiscuscultivar ‘Morrison-Gilberg (IV)’, disclosed in U.S. Plant Pat. No.11,165. In side-by-side comparisons conducted in Pacific, Mo., plants ofthe new Hibiscus are more rounded in plant shape, have more entire petalmargins, more ruffled petals, and more prominent petal veins than plantsof the cultivar ‘Morrison-Gilberg (IV)’.

BRIEF DESCRIPTION OF THE PHOTGRAPH

The accompanying colored photograph illustrates the overall appearanceof the new cultivar, showing the colors as true as it is reasonablypossible to obtain in colored reproductions of this type. Colors in thephotographs may differ slightly from the color values cited in thedetailed botanical description which accurately describe the actualcolors of the new Hibiscus. The photograph comprises a close-up view ofa typical flower of ‘Plant No. 179’, developing flower buds and upperand lower leaf surfaces.

DETAILED BOTANICAL DESCRIPTION

The following observations, measurements and values describe plantsgrown in Park Ridge, Ill. under outdoor conditions with day temperaturesranging from 50 to 100° F. and night temperatures ranging from 45 to 80°F. In the description, color references are made to The RoyalHorticultural Society Colour Chart except where general terms ofordinary dictionary significance are used.

Botanical classifications: Hibiscus moscheutos cultivar ‘Plant No. 179’.

Parentage:

Female or seed parent.—Hibiscus moscheutos cultivar ‘Red Plate’, notpatented.

Male or pollen parent.—Hibiscus moscheutos cultivar ‘Bill's GiantWhite’, not patented.

Propagation:

Type.—By terminal and stem cuttings.

Time to initiate roots.—About 7 days.

Time to develop roots.—About 14 days.

Root description.—Thick and heavy center root crowns; large succulentroots with many fine white secondary roots.

Plant description:

Plant form.—Perennial shrub; spherical.

Plant height, soil level to top of flowers.—About 4 to 5.5 feet.

Plant diameter, area of spread.—About 3.5 to 5.5 feet.

Internode length.—About 2 to 5 inches.

Growth rate.—Very fast; vigorous. Plants emerge from roots in spring andflower about three to four months later during the summer.

Lateral branch length.—About 20 to 40 inches.

Lateral branch diameter.—About 0.25 to 0.5 inches.

Lateral branch texture.—Smooth.

Lateral branch color.—143C.

Foliage description:

Arrangement.—Alternate, single.

Length.—About 3 to 8 inches.

Width.—About 2 to 5 inches.

Shape.—Ovate to cordate.

Apex.—Acuminate.

Base.—Cordate to obtuse.

Margin.—Serrate.

Texture.—Smooth, glabrous.

Color.—Mature foliage, upper surface:139A. Mature foliage, lowersurface: 138B.

Durability to stress.—Very good.

Petiole.—Length: About 3 to 5 inches. Diameter: About 0.125 inches.Color: 143C.

Flower description:

Flower appearance.—Very large rounded and flat single flowers with fiveoverlapping petals. Petals vibrant pink in color. Flowers maintain theirflat shape for up to two days. As a cut flower, flowers last about oneday. Flowers self-cleaning. Not fragrant.

Time to flower.—About 90 to 120 days after plants emerge from the rootcrown in the spring; plants flower for about 20 to 40 days in themidsummer in the Midwestern United States.

Flower arrangement.—Flowers arranged singly at terminal leaf axils andface outward.

Quantity of flowers.—One year-old plants will produce about five flowersand bus at one time; two year-old plants will produce about 15 flowersand buds at one time; and three year-old plants will produce about 20flowers and buds at one time.

Flower diameter.—About 10 to 12 inches.

Flower bud (just before showing color).—Rate of opening: From visiblebud to flower, about four weeks are required depending on temperatures.Length: About 2 to 3.5 inches. Diameter: About 1 to 2 inches. Shape:Ovoid. Color: 60A.

Petals.—Arrangement: Corolla consists of five overlapping petals.Length: About 5 to 6 inches. Width: About 5 to 6 inches. Shape: Broadlyovate. Apex: Rounded. Margin: Entire; undulating with some ripples.Texture: Smooth; slightly rippled. Color: Upper surface: 57C with 57Dvenation. Lower surface: 57D.

Sepals.—Number per flower: Five. Length: About 1.5 inches. Width: About0.75 inches. Shape: Deltoid. Apex: Acute. Color: 143C.

Peduncles.—Length: About 3 to 5 inches. Angle: Horizontal. Strength:Strong. Color: 143B.

Reproductive organs.—Androecium: Stamen number: About 15 to 25. Anthersize: About 0.063 to 0.125 inches. Amount of pollen: Abundant. Pollencolor: 162A. Gynoecium: Pistils: One. Pistil length: About 2 to 5inches. Style color: 155C. Stigma number: Five. Stigma color: 55B. Seed:Capsule length: About 1 inch. Quantity: About 100 seeds per capsule.Length: About 0.125 inches. Diameter: About 0.125 inches. Color: 166B.

Disease/insect resistance: Plants of the new Hibiscus appear to beresistant to known Hibiscus pathogens and insects.

Weather tolerance: Plants of the new Hibiscus are very tolerant toweather extremes including wide ranges in humidity level, drought andflooding. Plants of the new Hibiscus will tolerate temperatures from−25° to 100° F.

It is claimed:
 1. A new and distinct Hibiscus plant named ‘Plant No.179’, as illustrated